$ sign in page templates

We use DWTs as the basis for a web site. Throughout the HTML code in the DWTs we use the

${}

as containers for tokens that are replaced by an underlying web application.

e.g. ${variable}

For the most part, this works without issue. However, when the "Update pages" command is run, the associated HTML templates are updated, but any variable tokens contained within certain HTML elements end up being replaced incorrectly.

For example this HTML in the DWT:

<a href="${variable}">Text</a>

ends up as the following the HTML page:

<a href="{variable}">Text</a>

It would only appear to affect the variable tokens used within certain HTML elements.

For example in the DWT:

<a href="${token}" title="${tooltip}"><img src="${logo}" alt="Logo" /><span class="sr-only">${mobileheader}</span></a>

will update as in the HTML page:

<a href="{token}" title="${tooltip}"><img src="{logo}" alt="Logo" /><span class="sr-only">${mobileheader}</span></a>

So seemingly, only affecting ${} tokens inside <a> and <img> tags.